EP2161732A3 - Switching mechanism for motor protection circuit breaker - Google Patents

Switching mechanism for motor protection circuit breaker Download PDF

Info

Publication number
EP2161732A3
EP2161732A3 EP09169262A EP09169262A EP2161732A3 EP 2161732 A3 EP2161732 A3 EP 2161732A3 EP 09169262 A EP09169262 A EP 09169262A EP 09169262 A EP09169262 A EP 09169262A EP 2161732 A3 EP2161732 A3 EP 2161732A3
Authority
EP
European Patent Office
Prior art keywords
switching mechanism
circuit breaker
protection circuit
motor protection
break
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09169262A
Other languages
German (de)
French (fr)
Other versions
EP2161732A2 (en
EP2161732B1 (en
Inventor
Hwan-Chang Kil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LS Electric Co Ltd
Original Assignee
LS Industrial Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LS Industrial Systems Co Ltd filed Critical LS Industrial Systems Co Ltd
Publication of EP2161732A2 publication Critical patent/EP2161732A2/en
Publication of EP2161732A3 publication Critical patent/EP2161732A3/en
Application granted granted Critical
Publication of EP2161732B1 publication Critical patent/EP2161732B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/503—Means for increasing the opening stroke of the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3015—Charging means using cam devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit

Landscapes

  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Protection Of Generators And Motors (AREA)

Abstract

Disclosed is a switching mechanism for a motor protection circuit breaker capable of reducing a force required to adjust a handle, and capable of enhancing the reliability to break a circuit. The switching mechanism for a motor protection circuit breaker comprises a push link 3 having an outer circumferential curved surface of a varying cam profile, so as to enhance a function to break the circuit by pressing movable contact plates.
EP09169262.4A 2008-09-08 2009-09-02 Switching mechanism for motor protection circuit breaker Not-in-force EP2161732B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080088446A KR100996806B1 (en) 2008-09-08 2008-09-08 Swiching mechanism for motor protection circuit breaker

Publications (3)

Publication Number Publication Date
EP2161732A2 EP2161732A2 (en) 2010-03-10
EP2161732A3 true EP2161732A3 (en) 2012-07-11
EP2161732B1 EP2161732B1 (en) 2019-05-01

Family

ID=41168444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09169262.4A Not-in-force EP2161732B1 (en) 2008-09-08 2009-09-02 Switching mechanism for motor protection circuit breaker

Country Status (5)

Country Link
US (1) US8217287B2 (en)
EP (1) EP2161732B1 (en)
KR (1) KR100996806B1 (en)
CN (1) CN101673644B (en)
ES (1) ES2732727T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2629315A1 (en) 2012-02-14 2013-08-21 Eaton Industries GmbH Actuation mechanisms for circuit breakers
US9343256B1 (en) * 2014-12-03 2016-05-17 Eaton Corporation Electrical switching apparatus, and indication assembly and trip cam therefor
US9613774B2 (en) 2014-12-18 2017-04-04 Eaton Corporation Circuit breakers with common trip cams and related trip cams
KR20180099330A (en) 2017-02-28 2018-09-05 엘에스산전 주식회사 Molded Case Circuit Breaker with Interlock for Contacts
US10319544B2 (en) * 2017-06-16 2019-06-11 Eaton Intelligent Power Limited Bolted pressure switch motor arrangement
KR102498614B1 (en) * 2022-03-15 2023-02-14 한국철도공사 Point key switch control device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1463194A1 (en) * 1962-07-25 1968-11-07 Gen Electric Device for preventing the movable contact carrier arm of an electrical switch from jumping back into its closed position after the switch has been triggered by an overcurrent
DE10050081A1 (en) * 1999-10-11 2001-05-10 Schneider Electric Ind Sa Contactor
US20040069603A1 (en) * 2002-10-10 2004-04-15 Richter David N. Circuit breaker switching mechanism

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027092A (en) 1990-05-03 1991-06-25 General Electric Company Tripping arrangement for molded case circuit interrupter
CN1074852C (en) * 1996-03-15 2001-11-14 三菱电机株式会社 Circuit breaker
US6160234A (en) * 1999-04-29 2000-12-12 Eaton Corporation Reduced drag ratchet
US6787725B2 (en) 2002-03-21 2004-09-07 Lg Industrial Systems Co., Ltd. Switching mechanism of circuit breaker for gas insulted switchgear
KR100516943B1 (en) 2003-12-26 2005-09-23 엘에스산전 주식회사 Structure of breaking apparatus for trip error protection of motor protected breaker and method of operating thereof
KR100771918B1 (en) * 2006-10-17 2007-11-01 엘에스산전 주식회사 A switching mechanism for an air circuit breaker
KR200441576Y1 (en) 2007-03-08 2008-08-26 엘에스산전 주식회사 Switch device of circuit breaker
US7977592B2 (en) * 2007-09-11 2011-07-12 Siemens Industry, Inc. Double break disconnect/contact system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1463194A1 (en) * 1962-07-25 1968-11-07 Gen Electric Device for preventing the movable contact carrier arm of an electrical switch from jumping back into its closed position after the switch has been triggered by an overcurrent
DE10050081A1 (en) * 1999-10-11 2001-05-10 Schneider Electric Ind Sa Contactor
US20040069603A1 (en) * 2002-10-10 2004-04-15 Richter David N. Circuit breaker switching mechanism

Also Published As

Publication number Publication date
EP2161732A2 (en) 2010-03-10
CN101673644B (en) 2012-08-29
CN101673644A (en) 2010-03-17
KR100996806B1 (en) 2010-11-25
KR20100029610A (en) 2010-03-17
US8217287B2 (en) 2012-07-10
US20100059350A1 (en) 2010-03-11
ES2732727T3 (en) 2019-11-25
EP2161732B1 (en) 2019-05-01

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